Question
Question: An iron tyre of diameter 2 m is to be fitted on to a wooden wheel of diameter 2.01 m. The temperatur...
An iron tyre of diameter 2 m is to be fitted on to a wooden wheel of diameter 2.01 m. The temperature to which the tyre must be heated, ifa = 11 × 10–6/0C and room temperature is 200C, will be –
A
474.50C
B
490.50C
C
440.50C
D
460.50C
Answer
474.50C
Explanation
Solution
Dq = lαΔl = 2×11×10−60.01 = 22104 = 454.5
q = 454.5 + 20 = 474.50C